Experience Trackball comfort without the cords! Enhance your computing experience with this Logitech Cordless Trackman Optical Trackball mouse! The Logitech 904369-0403 cordless mouse features reliable cordless technology so you can free your desktop and end cable clutter! Its right-handed design delivers all-day comfort!With the virtually maintenance-free optical marble technology you can track smoothly, plus forward and back buttons take the effort out of Web and document browsing! Use the scroll and drag lock button to navigate content more easily and have a much more productive experience. Upgrade today!